Type-writer attachment.



J. R. BOWIE. TYPE `WRITER ATTACHMENT. APPLIoATIoN FILED APR.19, 1912.

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Patented Ju1y1, 1913.

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` bars or at the Vcarries a pivoting pin the key is depressed and JOHN R. BOWIE, 0F ELIZABETHTON, TENNESSEE.

TYPE-WRITER ATTACHMENT.

ASpecification of Letters Patent. Application led. April 19, 1912. Serial No. 691,855.

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To all whom t may concern.'

Be it known that I, JOHN R. Bowie, a citizen of the United Stat-es, residing at Elizabethton, in the county-of Cart-er and State of Tennessee, have invented new and useful Improvements in Type-Writer Attachments, of which the following is a speciication. Y

rIhis invention relates to -typewriter attachments andthe object of the invention is to provide a simple key operated device by which erasures may be conveniently made without moving the paper on the platen and without using a hand operated eraser.

Further objects of this invention will appear as the following specific description is read in connection with the accompanying drawing, which forms a part of-this application, and in which Figure 1 is a detail elevation 0f the device. Fig. 21 is a similar view showing the type bar upon which the attachment is secured lowered to bring the attachment intoengagement with the-platen.

In carrying out this invention, the devicehasbeen shown used 1n connection with an Oliver typewriter which employstheusual circular platen 1 engaged by the type bars 2 `which are operated through the links 3 connected to the key bars 4. This attachment may be applied directly to one of the key bars or to an auxiliary barof the same character arranged at the top ofthe regular key bottom thereof, here shown at the top. The attachment comprises a bifurcated supporting member 6 which is securedto the typefbar by means of a standard 7 or in anyother suitable manner and 8 upon which is vmounted an eraser member 9, preferably constructed las shown of steel with a serrated or le like edge 10 to engage the paper 11`when carried by the mounting wipe out the letter- 'previously formed thereon by one of the type bars. The eraser may be in the form of a disk or cam, as will be readily understood, but must be pivoted eccentrically so that when it engages the paper, it will slide thereover by a further depression of the type bar, as will be readily understood.l In order to hold the free end of the eraser member depressed, a spiral spring 12 is connected at this end andto the mounting member, as shown. If found to be necessary, stops may be provided to limit the upward and downward lmovement ofthe eraser member.

When the key is depressed in the manner of.

the ordinary type bar key, the bar will be lowered and the eraser member will be brought `into engagement with the paper and will wipe across the same so as to erase the letter on the paper. The type bar is returned to normal position in any suitable manner, as by a spring.

What is claimed is z- 1. In combination, a key operated bar, and an erasing' attachment carried thereby and operated in the movement of said bar.

2. In combination, a platen, a ,key operated bar, and an erasing attachment carried thereby and adapted to be brought into engagement with the platen and to wipe over the same in the operatic-n of the bar.

3. In combination, a platen, a key opand an eccentrically pivoted erasing member ed to engage and wipe across the platen in the Amovement ofthe bar.

' In testimony whereof I affix my signature `in presence of two witnesses.

l JOHN R. BOWIE. Witnessesi -CHAS. B. CLARK, vEDWIN G. CARPENTER. v-

member and adapt- 

